Pocket Penetrometer : Alpha Chem is manufactures,exporter & suppliersĀ Pocket Penetrometer. Pocket Penetrometer : Concrete Pocket Penetrometer is lightweight for field and lab evaluation of the initial set of concrete mortar based on ASTM C-403. Penetration plunger has a 1/20 sq. inch tip area. Calibrated range for the pocket penetrometer is 0-700 psi.